scope:

This standard establishes requirements for the design, manufacture, installation, inspection, and maintenance of machines intended for the movement of curtains. Curtains operated by these machines may be for scenery, performance, presentation, acoustical dampening, museum exhibits, retail displays, and theatrical production. Specifically included are control systems, mechanical construction, and powertrain components of said machines.

Excluded are the curtain fabric construction, track, and load suspension system. This standard is not a track or track components standard. Track components that interact with the operating media are included in this standard (see annex note).

Curtain effect machines that require manually resetting or repositioning the curtain before the system may be used again are not included (see annex note).

This standard does not apply to the structure to which the machine is attached, or machines covered by other existing standards such as utility hoists, fire safety curtains or performer flying.